JNacht,
Having done a few tile jobs before, and having come across a few that had problems, I'd encourage you to consider the strength of your substrate prior to considering any potential difference in height on the two different surfaces.
Provided the span of the underlying joists isn't too long, and their dimensions are enough to limit deflection of the subfloor, I personaly, would use either a 1/4 inch cbu, or perhaps Ditra (more info at
http://www.schluter.com/6_1_ditra.aspx ). Either of these should bring the height of the tile floor pretty close to the wood floor.
Also, there is a ridiculous wealth of information available at
http://www.johnbridge.com/vbulletin/forumdisplay.php?forumid=1 on any imaginable tile issue.